Periodically driven open quantum systems with vibronic interaction: Resonance effects and vibrationally mediated decoupling

TL;DR

This paper explores how periodic driving influences open quantum systems with vibronic interactions, revealing resonance effects, vibrationally mediated decoupling, and methods to control charge transport.

Contribution

It demonstrates vibrationally mediated decoupling and partial Franck-Condon blockade removal using Floquet engineering in vibronic quantum systems.

Findings

Effective decoupling at specific frequencies due to vibrational interactions

Partial removal of Franck-Condon blockade through tailored driving

Numerically exact calculations confirming resonance effects

Abstract

Periodic driving and Floquet engineering have emerged as invaluable tools for controlling and uncovering novel phenomena in quantum systems. In this study, we adopt these methods to manipulate nonequilibrium processes within electronic-vibronic open quantum systems. Through resonance mechanisms and by focusing on the limit-cycle dynamics and quantum thermodynamic properties, we illustrate the intricate interplay between the driving field and vibronic states and its overall influence on the electronic system. Specifically, we observe an effective decoupling of the electronic system from the periodic driving at specific frequencies, a phenomenon that is mediated by the vibrational mode interaction. Additionally, we engineer the driving field to obtain a partial removal of the Franck-Condon blockade. These insights hold promise for efficient charge current control. Our results are obtained from numerically exact calculations of the hierarchical equations of motion and further analyzed by a time-periodic master equation approach.